WPF Control Composition (Part 2 of 2)

<ResourceDictionary
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006">

  <!-- Add resources for FolderTreeView control -->
  <ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="Shared.xaml" />
  </ResourceDictionary.MergedDictionaries>

  <Style TargetType="{x:Type ProgressBar}">
    <Setter Property="Template">
      <Setter.Value>
        <ControlTemplate TargetType="{x:Type ProgressBar}">
          <ControlTemplate.Resources>
            <Storyboard x:Key="ValueChangedOn">
              <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="PART_Track" Storyboard.TargetProperty="(UIElement.BitmapEffect).(OuterGlowBitmapEffect.Opacity)">
                <SplineDoubleKeyFrame KeyTime="00:00:00" Value="0" />
                <SplineDoubleKeyFrame KeyTime="00:00:00.2000000" Value="1" />
                <SplineDoubleKeyFrame KeyTime="00:00:02" Value="0" />
              </DoubleAnimationUsingKeyFrames>
            </Storyboard>
            <Storyboard x:Key="IndeterminateOn">
              <DoubleAnimationUsingKeyFrames Storyboard.TargetName="IndeterminateGradientFill" Storyboard.TargetProperty="(Shape.Fill).(LinearGradientBrush.Transform).(TransformGroup.Children)[0].X" RepeatBehavior="Forever">
                <SplineDoubleKeyFrame KeyTime="0" Value="0" />
                <SplineDoubleKeyFrame KeyTime="00:00:2.4" Value="145" />
              </DoubleAnimationUsingKeyFrames>

            </Storyboard>
          </ControlTemplate.Resources>
          <Grid>
            <Border x:Name="PART_Track" BorderBrush="{DynamicResource SolidBorderBrush}" BorderThickness="1" CornerRadius="0,0,0,0" Background="{DynamicResource LightBrush}">
              <Border.BitmapEffect>
                <OuterGlowBitmapEffect Opacity="0" GlowColor="{DynamicResource WhiteColor}" GlowSize="3" />
              </Border.BitmapEffect>
            </Border>
            <Border HorizontalAlignment="Left" x:Name="PART_Indicator" BorderBrush="{DynamicResource NormalBorderBrush}" BorderThickness="1" CornerRadius="0,0,0,0">
              <Border.Background>
                <LinearGradientBrush EndPoint=".7,1" StartPoint=".7,0">
                  <GradientStop Color="#B2FFFFFF" Offset="0" />
                  <GradientStop Color="#C6FFFFFF" Offset="0.15" />
                  <GradientStop Color="#D1FFFFFF" Offset="0.275" />
                  <GradientStop Color="#C6FFFFFF" Offset="0.4" />
                  <GradientStop Color="#BFFFFFFF" Offset="0.65" />
                  <GradientStop Color="#A5FFFFFF" Offset="0.75" />
                  <GradientStop Color="#91FFFFFF" Offset="0.85" />
                  <GradientStop Color="#72FFFFFF" Offset="1" />
                </LinearGradientBrush>
              </Border.Background>
            </Border>
            <Grid x:Name="IndeterminateRoot" Visibility="Collapsed">
              <Rectangle Margin="{TemplateBinding BorderThickness}" x:Name="IndeterminateSolidFill" Opacity="1" RenderTransformOrigin="0.5,0.5" RadiusX="2" RadiusY="2" Fill="{DynamicResource ControlBackgroundBrush}" Stroke="#FF448DCA" StrokeThickness="0" />
              <Rectangle Margin="{TemplateBinding BorderThickness}" x:Name="IndeterminateGradientFill" RadiusX="2" RadiusY="2" StrokeThickness="1">
                <Rectangle.Fill>
                  <LinearGradientBrush EndPoint="0.508,1.394" StartPoint="0.401,-0.394" SpreadMethod="Repeat">
                    <GradientStop Color="#00FFFFFF" />
                    <GradientStop Color="#FEA1A1A1" Offset="1" />
                    <GradientStop Color="#00FEFEFE" Offset="0.517" />
                    <GradientStop Color="#FEA1A1A1" Offset="0.517" />
                    <LinearGradientBrush.Transform>
                      <TransformGroup>
                        <TranslateTransform X="0" />
                      </TransformGroup>
                    </LinearGradientBrush.Transform>
                  </LinearGradientBrush>
                </Rectangle.Fill>
              </Rectangle>
            </Grid>
            <Border Background="{DynamicResource DisabledBackgroundBrush}" Opacity="0" BorderThickness="1,1,1,1" BorderBrush="{DynamicResource DisabledBorderBrush}" x:Name="border"/>
          </Grid>
          <ControlTemplate.Triggers>
            <Trigger Property="IsEnabled" Value="False">
              <Setter Property="Opacity" TargetName="border" Value="0.8"/>
            </Trigger>
<!--
  http://social.msdn.microsoft.com/Forums/eu/wpf/thread/c0d45ef7-e086-43f5-8581-2048e605ef32
            <EventTrigger RoutedEvent="RangeBase.ValueChanged">
              <BeginStoryboard Storyboard="{StaticResource ValueChangedOn}" />
            </EventTrigger>
-->            <Trigger Property="IsIndeterminate" Value="True">
              <Trigger.EnterActions>
                <BeginStoryboard Storyboard="{StaticResource IndeterminateOn}" />
              </Trigger.EnterActions>
              <Setter Property="Visibility" TargetName="IndeterminateRoot" Value="Visible"/>
            </Trigger>
          </ControlTemplate.Triggers>
        </ControlTemplate>
      </Setter.Value>
    </Setter>
  </Style>

</ResourceDictionary>